cdn

Mal-VC-PAB-PNP-CDN-A is a conjugate comprised of an agent and a linker, utilized in antibody-drug conjugates (ADC) [1] [2].

CDN-A, a cyclic di-nucleotide, serves as a precursor for synthesizing antibody-drug conjugates (ADC) and acts as a potent stimulator of both innate and adaptive immune responses. In humans, these cyclic di-nucleotides, produced endogenously in response to foreign DNA or by bacterial pathogens, activate the innate immune system by inducing the expression of interferon genes [1] [2] [3].

CDN1163 is a small molecule activator of sarco/endoplasmic reticulum Ca2+-ATPase (SERCA).

2'2'-cGAMP is a synthetic dinucleotide (CDN) that contains non-canonical 2'5'-phosphodiester bonds. It binds to the adapter protein stimulator of interferon genes , which is a component of the innate immune response that activates the type I interferon pathway when bound to cyclic dinucleotides. 2'2-cGAMP shows weaker binding to STING than 2'3'-cGAMP but binds more strongly than 3'3'-cGAMP , cyclic di-GMP , or 3'2'-cGAMP, which bind in the micromolar range (Kds = 1.04, 1.21, or 1.61 μM, respectively). Despite weaker binding, 2'2'-cGAMP induces IFN-β production in the same concentration range as 2'3'-cGAMP (EC50s = 15.8 and 19.4 nM, respectively, in L929 cells).

BI 7446 is a potent and selective cyclic dinucleotide (CDN)-based stimulator of interferon genes (STING) agonist capable of activating all five STING variants in cells, thus inducing tumor-specific immune-mediated tumor rejection. This compound is utilized in immuno-oncology research [1].

cGAMP disodium is a cyclic dinucleotide (CDN) found in bacteria that acts as an endogenous second messenger affecting interferon production in response to cytoplasmic DNA. cGAMP disodium cascades signals from type I interferons and other immune mediators by activating interferon gene stimulator (STING). cGAMP disodium is a potent sublingual immune adjuvant that enables better immune function (serum anti-PA neutralization and airway secretions anti-PA SIgA response).

Cyclic di-UMP is a pyrimidine-containing cyclic dinucleotide (CDN).1It is produced by bacterial cGAS/DncV-like nucleotidyltransferases (CD-NTases), such as LpCdnE02 fromL. pneumophila, and binds to cGAS, in the apo or dsDNA-bound forms, with reduced affinity compared to 2'3'-cGAMP or 3'3'-cGAMP .1,2Cyclic di-UMP is intended for use as a negative control for cyclic di-GMP signaling. 1.Whiteley, A.T., Eaglesham, J.B., de Oliveira Mann, C.C., et al.Bacterial cGAS-like enzymes synthesize diverse nucleotide signalsNature564(7747)194-199(2019) 2.Hall, J., Ralph, E.C., Shanker, S., et al.The catalytic mechanism of cyclic GMP-AMP synthase (cGAS) and implications for innate immunity and inhibitionProtein Sci.26(12)2367-2380(2017)

SN-011 (GUN35901) is a STING inhibitor, which inhibited the activation of the STING signal pathway and to prevent or treat a STING- mediated disease. It is a demethyl analogue of DUN99845.

C82 acts as an inhibitor of Mycobacterium tuberculosis (Mtb) cyclic dinucleotide phosphodiesterase (CdnP), with an IC50 value of 17.5 µM. This particular enzyme is responsible for breaking down cyclic di-AMP (c-di-AMP) into adenosine 5'-monophosphate (AMP). Notably, C82 demonstrates selectivity for Mtb CdnP over other bacterial cyclic dinucleotide phosphodiesterases (CDN PDEs) such as Yybt, RocR, and Group B Streptococcus (GBS) CdnP, as well as the mammalian CDN PDE ENPP1, and the viral CDN PDE poxin, showing effectiveness at a concentration of 200 µM.

cGAMP is an endogenous second messenger in metazoans and triggers interferon production in response to cytosolic DNA. It also is a STING ligand.